P0420 on the 2015 Subaru Forester
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 1114614 | 2023-04-24. Service bulletin. Reprogramming Files for DTC P0420 |
|---|---|
| 11-146-14 | 2017-02-24. Service bulletin. REPROGRAMMING FILES FOR DTC P0420 |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.